M. Veith, S. Mathur, C. Mathur
Feb 14, 1998
Citations
0
Influential Citations
12
Citations
Journal
Organometallics
Abstract
A series of new iodide heterobimetallic isopropoxides [I2Sn{Al(OPri)4}2] (1), [I2Sn{Ti(OPri)5}2] (2), [I2Sn{Nb(OPri)6}2] (3), and [I3Sn{Zr(OPri)5(PriOH)}] (4) obtained on reacting SnI4 with stoichiometric amounts of alkali-metal reagents [KAl(OPri)4]n, [KTi(OPri)5]n, [KZr(OPri)5]n, and [KNb(OPri)6]n, respectively, is reported. The monomeric formulation and hexacoordination of tin proposed for 1−4, on the basis of microanalytical, cryoscopic, and multinuclear (1H, 13C, 27Al, and 119Sn) NMR spectral data, was established for 1, 2, and 4 by single-crystal X-ray diffraction analysis. The solid-state structures of 1 and 2 feature an approximately octahedral tin(IV) center bearing two terminal iodide ligands and two bidentate {Al(OPri)4}- and {Ti(OPri)5}- moieties, containing aluminum or titanium atoms in a distorted tetrahedral or trigonal-bipyramidal environment of OPri ligands, respectively. The crystal structure of 4 represents a bioctahedron formed by the face-sharing interaction of two slightly distorted ...